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24p vs 50i+deinterlacing+slowdown

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(@mandarin-man)
Posts: 3
Active Member
Topic starter
 

Hi,

I'd like to know what the added value of shooting in 24p is compared to shooting in say, 50i (PAL) using a low-end DV camcorder and then deinterlacing and slowing down to 24 fps using software . You'd have 24 progressive frames in both cases. I know these two methods probably won't yield the same results, but I don't quite understand why not. Could anyone shed some light on this? (leaving aside the 4% audio pulldown problems).

Thanks a lot!

 
Posted : 15/08/2005 8:27 am
(@markg)
Posts: 1214
Noble Member
 

Basically, 24p gives you the full frame resolution, deinterlacing loses 50% of the vertical resolution if you use a dumb deinterlacer and about 25% of the vertical resolution on average if you use a smart deinterlacer which looks for movement in the frame and only throws away parts of the second field where a lot of movement occurs.

In reality, provided you use a smart deinterlacing program, most people probably won't notice any difference.

 
Posted : 15/08/2005 10:25 am
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